Use this query to track down PC where the RAM has changed.
SELECT Distinct
v_GS_COMPUTER_SYSTEM.Name0 AS ‘PC Name’,
v_GS_X86_PC_MEMORY.TotalPhysicalMemory0 as ‘Current RAM’,
v_HS_X86_PC_MEMORY.TotalPhysicalMemory0 as ‘Past RAM’
FROM
v_GS_COMPUTER_SYSTEM v_GS_COMPUTER_SYSTEM,
v_GS_X86_PC_MEMORY v_GS_X86_PC_MEMORY,
v_HS_X86_PC_MEMORY v_HS_X86_PC_MEMORY
WHERE
v_HS_X86_PC_MEMORY.ResourceID = v_GS_X86_PC_MEMORY.ResourceID
AND v_GS_COMPUTER_SYSTEM.ResourceID = v_GS_X86_PC_MEMORY.ResourceID
AND v_GS_COMPUTER_SYSTEM.ResourceID = v_HS_X86_PC_MEMORY.ResourceID
AND v_HS_X86_PC_MEMORY.TotalPhysicalMemory0 <> v_GS_X86_PC_MEMORY.TotalPhysicalMemory0